Rolling-mill for metal sheets and strips.



V. CHARTENER.

ROLLING MILL FOR METAL SHEETS AND STRIPS.

APPLICATION FILED JUNE 27, 1913.

Patented Feb. ,9, 1915.

4 SHEETS-SHEBT 1,

I wrruasszs \L- CHARTENER.

ROLLING MILL FOR METAL SHEETS AND STRIPS.

APYLIGATION FILED JUNE 27 1913.

Patented Feb. 9, 1915.

4 SHEETS-SHEET 2.

INVENTOR law; 04m

v v. GHARTENER. J ROLLING MILL FOR METAL SHEETS AND STEIPS.

APPLICATION FILED JUNE 27, 1913 1,127,591. Patented Feb. 9,1915.

4 SHEETS-SHEET 3.

V. GHARTENER.

ROLLING MILL FOR METAL SHEETS AND STRIPS.

APPLICATION IILBD 111M127, 1913.

1,1 27,591. Patnted Feb. 9, 1915.

4 SHEE'I'E-BHEET 4.

| WI III M Eff! ILII M II lady; at mvsn'ron errant oer sit VICTOR CHARTENER, OF ?ITTSBURGH, ?ENNSYLVQTI.

ROLLING-MILL FOR METAL SHEETS Siitfiri.

Application filed June 27. 1913.

To all whom may concern it known that l, vic'ron CnAimanEn, a citizen of the? United States, residing at Pittsburgh, in thecounty of Allegheny and State of Pennsylvania, have invented new and useful improvements in RollingMills for Metal Sheets and Strips, of which the following a specification.

My invention relates to rolling mills for metal sheets and strips. Hot rolled strip metal varies in width from twenty inches and over down to one and a half inches, and in thickness from No. 10 gage and over down to No. 1%) gage, and in length from two hundred feet and over down to twenty feet. Several rains of rolls are required for rolling metal strips of such. various dimensions. These. trains must vary greatly in their opacity as well as in their design and arraim'cmcnt for rolling all the said widths, lengths. and gages of metal strips. As the average tonnage of certain sizes is, at times, comparaliiely small and a large number of grooved rolls for rolling strips of various sizes must always be employed and kept on hand, the production of finished material under ordinary practice becomes both costly and tedious, while the installation of a plant with the necessary mills suitable for rolling even the smaller part of the above named sizes must of necessity cover a large area of ground. '18- it has not heretofore been possible to place the necessary trains with their auxiliary machinery in one building of practicable and moderate dimensions. The management and maintenance of a plant in dillcrent buildin s or at separate points, and lhe distribution of fuel and power in the same becomes a very serious matter and not easy ol' satisfactory economic solution.

The icct of my invention is to roll all of the ahove-nancd izes of strip metal in one luiildiu; of moderate and entirely practicahle dimensions with power distribution of the most compact and economic design.

Lcferrin; to the accompanying drawings, Figures 1 and 2 area plan showing conventionally the general arrangement of the mills in a plant involving my inventiom the figures oeing continuations of each other at the line (I -Ll. Fig. 3 is a vertical longitudinal sectio'irthrough two pairs of rolls Specification of Letters Patent.

Patented Feb. 99, 1915.

Serial No. 713,084.

one stand of rolls to the end view the V, riving the rolls. mowing the relation of the several tables, guideways, and ushers for the finishing mills, the stands of rollers being shown closer together than the stands of rolls in Fig. 4, thereby ausing the guideways P and f? to appear to have different ngths and inclinations on Fig. 6 than on ig.

[he roughing; trains A and are driven or the engine or motor {7, the main 7 ring i) being placed :out midway bet-We .r the trains A and i tra suitahle The train A the universal type. The heir! one nnirlred a, being shown, should he of adequate length and proportionate diameter, and the vertical rolls a should be suitably arranged and constructed for the rolling of slabs from twenty inches wide or over down to, say, inches, and of any suitable thickness. The slabs are first heated in the i'nrnaces E and placed on the approach table I in line with the tables G G on either side of the train A. The slabs are repeatedly passed from the table G through the train A to the table G, and from the latter through the train A back to the table 1 in the usual well known manner until the slabs have been reduced to the proper length and thickness, whereupon they are conveyed iniinediatcly to the table H, from which they are fed into the vertical edging mill l comprising a pair of rolls J is the motor for driving the mill I.

The slabs, which, after having been "passed through the roughing train A, are about one-half inch thick and of any width up to twenty inches or ever, receive one pass in the edging mill 1 in order to roll them to exact final width and for the purpose of re moving the scale therefrom.

The slabs pass from the mill I to the tahle K (Fig. 3), from which they are led to first pair of rolls Z of the finishing train L. The sheets issuing from the rolls I pass to the tahlc M. and then along the curved guides X. N and to the second pair of finishing rolls 7, which lie somewhat ahove them. The sheets pass from the rolls 7' to the table K which is above the table K. The pusher (J. operated hy fluid pressure from the cylinder 0 or otherwise plhli'h the sheets from the table ii laterally to the inclined slide way P, down which the slide to the feedtable Q in front of the rolls 1 from which they pass along a curved guide and are turned back to the rolls From the rolls the sheets pass to the table R from which they are pushed by the pusher 0 down the slideway P to the table S in front of the third stand of finishing rolls l composed of a single pair. The stand of rolls l and 1 together with their feed tables and curved guides are duplicates of the stand of rolls Z and Z with their feed tables and curved guides and need not be separately described or more fully shown. The finishing rolls are driven by the engine or motor C, D representing the main gearing.

In Fig. 6 I have shown conventionally means for operating the feed rollers for the tables. The rollers in the tables K, Q, and S are driven by bevel gearing k, g, and s, in a wellknown manner, and the rollers K and R are driven from the shafts of the rollers K and Q, by the spur-gearing Ia and FIZHII the rolls Z the finished sheets pass to the table T from which they are transferred to the transfer table and cooling bed T whence they are moved to the shear table T where they may be subjected to the action of the snears z and t.

The curved guides N, N (Fig. 3) coinprise two pivoted member, one being pivoted at its lower edge and arranged to swing up and cover the lower portion of the space between the levels of the passes of the two pairs of rolls Z and l, and the other being pivoted at its upper edge and arranged to swing downwardly and cover the'upper portion of the said space. The lower portion of the member N lies on the outer face of the upper portion of be lower member N, "0 that the sheets cannot pass between the said members while being guided by them. The members N and N are yieldingly held in the position shown in full lines by the coiled expansion springs 11. which bear against the trunnion blocks n and the respective members N and N, there being within the springs the rods 12 pivoted to the said members and extending through the trunnion blocks. \Vhen the sheets are fed through the lower rolls l faster than they are fed through the upper rolls l the metal pressing against the members N, N, causes them to be swung out as shown in dotted lines. the sheet being looped beyond the said members as shown by the dotted line I have arranged the gearing for driving the rolls so that. the upper pair 01 rolls will be driven faster than the lower pair of rolls as shown on Fig. 5, which will now me explained.

The main gearing D comprises the large spur-gear d driven directly by the shaft 0 of the motoi'C, and the two spur-gears cl 65, and d of different sizes meshing with the gear 0!, the gear d being larger than the furnace E and the pusher W, by which the billets are pushed into the furnace. The billets pass from the furnace to the table G and then to the roughing train B, whose rolls, commonly called box and edge rolls, are grooved in the usual manner, so that by passing the heated billets through them a suflicient number of times and rotating the billets ninety degrees between passes, the billets will be formed into flats of the desired widths. From the roughing mill B the flats pass over the table G through the vertical edging mill I having the rolls 2" and the driving motor or engine J. The flats then pass over the table G" and through the intermediate flattening mill V, and thence over the table G and through the edging mill I having the vertical rolls i and driving motor J From the mill I the flats pass over the table K to the finishing mill L which is constructed. like the finishlike those which accompany the mill L, so

veyed to a position between the heating that it is unnecessary .to describe the same further. The same parts in the mills L and L are indicated by. the same reference charv actors. The rolls of the mill L are driven .by the engine C, D representing the main gearing. The rolls of the flattening mill are driven from the engine C by the belt Y.

From the rolls 1* of the finishing train L, the sheets pass to the table T, whence they are. removed tothe transfer and cooling bed .T and then to the shear table T, where.

they aresheared by the shears t and' it".

When the finished sheets are ve thin and the feedthrough the rolls Z 'in the mill L is required to be faster than that given to them by the engine C, they may be driven separatel from the engine C by means of the belt With the exception of thqnianipulation of thebillets in the breaking down mill B, the operations are carried on automatically from the furnace tothe shear table.-

The mills A, I, andL are made of such sizes iind designs as to make strips or sheets of all widthsffrom twenty inches or over down to six inches, while the mills B, I,

V, I and, L are made of such sizes and dea halt inches, the two sets of'mills covering the entire range of widths of strips or sheets.

By arranging the two sets of mills side by side so that the roughing mills A and B can he \liiven by the same engine C: by arranging the tin: pairs of finishing rolls of the mills i anrl L in three stands in line with one another: uinl by arranging the shear tah tj-s 'li" an l so that they are rinse to each other and ithuut any obstructions between them, I eronmniye grratly in the nun'iber of persons required to operate and snperintend the operations and in the space required. The two sets ot mills arranged and vonstrurterl substantially as herein tlP- l'ii)('tl can be arranged in a huihling not ext-veiling eighty-tire feet \titlQ and four hnn lred teething making the. supervision of the plant (:iid and the rust ol the plant and of it opt-ration \'er low. The ilirtriliution and lmation (it the motor om-i surl that the piping or wi ing i \i-r} short.

l rlaim-- l. in a fini hing mill for heet metal. a series of stands of rolls arranged siile by side. earl: stand of rolls mmprising a pair of upper and a pair of lower rolls except the last stainl whirh comprises a single pair of, rolls a pair ol yielding (lll\'ttl guides for earh stand exempt the last, for guiding the sheets from the lower to the upper pair of roll fowl tables for hauling the sheets to the lower pairs of rolls ainl to the last pair of rolis, tables for reeeiiing the sheets from the upper pairs of rolls. guideways from the upper table in one stand to the table for the lower pair of rolls in the next stand and for the pair of rolls in the last stand, and means for moving the sheets from the upper tables to the guitileways.

In a finishing: mill for sheet metal. a plurality of stands of rolls arranged side by side and all but the last comprising tWo pairs of rolls one above the other and at the rear thereof, and means for pushing the sheets laterally and guiding the same from an upper pair of rolls to the next lower pair of rolls in the succeeding stand of rolls.

3. In a finishing mill for sheet metal, a plurality of stands of rolls arranged side by side and all but the last comprising two pairs of rolls one above the other and at the rear thereof, the lower pairs of rolls being in one alineinent and the upper pairs of rolls in another alineinent, and means for pushing: the sheets laterally and guiding the same from an upper pair of rolls to the next lower pair of rolls in the succeeding stand of rolls.

Signed at Pittsburgh, of June. 3L D- 1913.

VICTOR CHA R'IFJNER.

Pa. this th day \Vitnesses:

Amen E. DUFF, F. N". Banana. 

